FIG. 1.

Phenotypic resistance to loviride, nevirapine, delavirdine, efavirenz, HBY-097, and tivirapine in representative samples containing the K103N mutation (A) or other NNRTI resistance-associated mutations (B). Due to the high delavirdine IC₅₀ for the wild-type strain, the maximum resistance measurable was 62.2-fold (1.79 log₁₀-R). ID, identification.